Don is right. Obviously Marty is taking this approach for fun--and may possibly not intend to answer our question.

I think most people don't seem to object to a visual aid to a singer.    I certainly don't--except for Rise Up Singing (AKA the Blue Book of Death)--which has just too much potential for abuse--and has been abused--to welcome it to any singaround.

Unless it's billed beforehand as a Rise Up Singing singaround. In which case the rest of us should be warned of this. And we will make the appropriate decision.

As I've noted before, you folks in the UK should count yourselves lucky-- you will never have to deal with this problem.